Old Mill and Brook Financial join Kinbrook as Group’s latest Hub

Old Mill, including its outsourced finance division Brook Financial, is pleased to confirm that they have joined the Kinbrook Group, a people-first accounting, wealth management, legal and professional advisory services group. This strategic combination is the latest as the group aims to build a UK-wide group of regional champions who are excellence-driven and nationally connected. Old Mill will be the group’s anchor in the South West -serving clients from its five offices in the region.

Both Old Mill and Brook Financial will continue to operate under their respective brands, maintaining leadership, client relationships, and team structures. As part of Kinbrook, they will benefit from national infrastructure, shared innovation, group-wide collaboration, and access to broader expertise – enhancing their ability to support and develop their people and deliver outstanding results and lasting value to their clients.

“Joining Kinbrook marks an important step in our journey – one that enables us to continue delivering the personal, long-standing service our clients value, while investing more in our people and the future,” said Mark Neath, CEO of Old Mill. “The partnership strengthens our ability to grow with purpose, broaden our services, and collaborate with like-minded firms. We’re proud to be Kinbrook’s South West hub and excited about the next chapter for Old Mill and Brook Financial.”

With more than 350 professionals across its offices in Exeter, Yeovil, Wells, Chippenham, and Ilminster, Old Mill has long been a trusted partner to businesses and individuals across the region. The business offers a full spectrum of services spanning accountancy, tax, wealth management, and business advisory, while Brook Financial provides specialist outsourced finance and payroll solutions.

“Old Mill is an outstanding business with deep regional roots and a clear vision for the future,” said Ian Symes, CEO of Kinbrook Group. “Their team shares Kinbrook’s commitment to people, excellence and long-term client relationships. This partnership marks a key moment for the group as we establish a strong presence in the South West and continue to grow with firms that lead in their regions.”

Kinbrook brings together established regional champions and invests in the people who power them – providing the resources, guidance, and collaborative platform they need to grow. Through this structure, its hubs deliver services to small and medium-sized enterprises (SMEs) and private clients across the UK.

Founding hubs include Duncan & Toplis and Beavis Morgan Group and their related businesses including Moorfields Advisory. These two hubs have 19 offices across the UK – adding Old Mill extends the groups reach to 24.

Through collective innovation, operational support, and a people-first culture, Kinbrook is building a high-performing national network – one rooted in strong local presence, shared values, and long-term impact.

Old Mill will continue to focus on investing in its people and supporting clients through long-term relationships, benefiting from the added support as part of the Kinbrook group.

As Kinbrook continues to expand, further hubs will be added to the group in other regions; building a future-ready professional services network that combines national capability with local depth.

Mark Neath added: “This is about doing more of what we do best – working closely with our clients and supporting our region – while being part of something bigger. The Kinbrook model respects our autonomy and enhances our ability to grow sustainably and invest in our people, clients and community.”

“This partnership marks a strong step forward in our regional growth journey, built on shared values, proven leadership, and deep local expertise,” said Ian Symes. “We’re excited about what we can achieve together.”

Local roots. National strength. One team. To learn more, visit https://www.kinbrookgroup.co.uk/